Merge pull request #13117 from romgrk/add-scroll-events

Implement scroll autocommand

1 files changed, 21 insertions, 0 deletions

diff --git a/src/nvim/window.c b/src/nvim/window.c
index 2147bd4fc7..9d918ebeb0 100644
--- a/src/nvim/window.c
+++ b/src/nvim/window.c
@@ -4975,6 +4975,27 @@ void shell_new_columns(void)
   win_reconfig_floats();  // The size of floats might change
 }
 
+/// Check if "wp" has scrolled since last time it was checked
+/// @param wp the window to check
+bool win_did_scroll(win_T *wp)
+{
+  return (curwin->w_last_topline != curwin->w_topline
+          || curwin->w_last_leftcol != curwin->w_leftcol
+          || curwin->w_last_width != curwin->w_width
+          || curwin->w_last_height != curwin->w_height);
+}
+
+/// Trigger WinScrolled autocmd
+void do_autocmd_winscrolled(win_T *wp)
+{
+  apply_autocmds(EVENT_WINSCROLLED, NULL, NULL, false, curbuf);
+
+  wp->w_last_topline = wp->w_topline;
+  wp->w_last_leftcol = wp->w_leftcol;
+  wp->w_last_width = wp->w_width;
+  wp->w_last_height = wp->w_height;
+}
+
 /*
  * Save the size of all windows in "gap".
  */